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kirza4 [7]
2 years ago
7

28) what is the number of oxygen atoms in the formula unit of Ca3(PO4)2?​

Chemistry
1 answer:
stealth61 [152]2 years ago
3 0

Answer:

4.816x10²⁴atoms

Explanation:

the number of moles of oxygen is 8

let x be number of oxygen atoms

recall that 1 mole=6.02x10^23 atoms

therefore, 8 moles =x

cross multiply

8 x 6.02 x 10^23 = x

x = 4.816 x 10²⁴atoms

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What is formula for chromium (III) phosphate trihydrate and cobalt (II) phosphate octahydrate
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A student Hatfields a jar with rice and take Insta jars lids the student wants to use a jar of rice to model particle motion of
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Answer and Explanation:

The student can use the half rice pot to model the movement of the particles of the material. For this it is necessary that he research the spatial arrangement of the molecules in a solid material, a liquid and a gas.

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The research will show that the molecules of a liquid material are a little more distant from each other than the molecules of solid materials. However, this distance is not very long, allowing these molecules to be able to touch each other when they are in motion. To visualize this with the rice grains, the student must remove some grains from the jar and allow a certain space between one grain and another.

The molecules of a gaseous material are very far apart. These molecules have access to full movement and rarely touch each other. To visualize this, the student must remove many grains of rice from the pot, leaving it almost empty and watching the movement of the remaining grains.

8 0
3 years ago
A mixture of gases has a total pressure of 1465 mm Hg. The mixture is made up of carbon monoxide, carbon dioxide and sulfur diox
S_A_V [24]

Answer:

Pressure of sulfur dioxide is 360mmHg

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The total pressure of a gas mixture is defined as the sum of the pressure of each gas in the mixture.

In the mixture of the problem, there are CO, CO₂ and SO₂ as gases. Total pressure is 1465mmHg, pressure of CO is 234mmHg and pressure of CO₂ is 871mmHg, it is possible to wirte:

1465mmHg = 234mmHg + 871mmHg + P_{SO_{2}}

P_{SO_{2}} = 360mmHg

Thus, <em>pressure of sulfur dioxide is 360mmHg</em>.

5 0
3 years ago
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